AKO-14560

Electronic expansion valve controller

User Manual

GB 1456H002 Ed.01

Index

AKO Electromecánica thanks and congratulates you for purchasing our product, in whose development and manufacture the most innovative technology has been used, as well as strict production and quality control processes.

Our commitment to satisfy our customers and our continuous efforts to improve every day can be seen in the various quality certifications we have obtained. This is a high performance, high technology product. The operation and final performance of the equipment depend on proper planning, installation, configuration and commissioning. Read this manual carefully before installation, and always follow its instructions. Only qualified personnel should install or perform technical assistance on this product.

This product is designed to be used in the applications described in the product manual. AKO Electromecánica gives no guarantee of its operation in any use not foreseen in the manual, and is not responsible for any damage resulting from improper use, configuration, installation or commissioning.

It is the responsibility of the installer and the customer to comply with and ensure others comply with all regulations applicable to installations incorporating our products. AKO Electromecánica is not responsible for any damage caused by non-compliance with regulations. Follow strictly the instructions given in this manual.

To maximise the service life of our equipment, these recommendations should be followed:

Do not expose electronic equipment to dust, dirt, water, rain, humidity, high temperatures, chemicals or corrosive substances of any sort.

Do not submit the equipment to blows or vibrations nor try to manipulate it differently from shown in the manual.

Never exceed the specifications and limitations indicated in the manual.

Always respect the specified ambient working and storage conditions.

During and after installation, avoid leaving loose, broken, unprotected or damaged wiring, since they might constitute a risk for the equipment and its users.

AKO Electromecánica reserves the right to make any non-metrology modification to the documentation or the equipment without previous notice.

Page

2

1.- .................................................................................................................3

..............................................................................................................................33.- Installation....................................................................................................................................4

Precautions ................................................................................................................................4Maintenance ..............................................................................................................................4Emergency power supply input ...................................................................................................4Initial configuration ....................................................................................................................4

........................................................................................................................................54.- Equipment description...................................................................................................................6

...................................................................................................................................6

...................................................................................................................................65.-Operation.......................................................................................................................................7

.......................................................................................................................................7

.......................................................................................................................................7..........................................................................................................7

...........................................................................................................................8Alarms .................................................................................................................................9Pressure Probe .....................................................................................................................9Temperature probe ...............................................................................................................9Expansion valve....................................................................................................................9

...............................................................................................................106.- Table of parameters .....................................................................................................................107.- ................................................................................................................12

Introduction2.- Versions and references

Technical specifications

..................................................................................................................................3

Compatibility

Wiring

IndicatorsMessages

KeypadDisplayAdjustment of parameters

Regulation

Initial parameters

1456H002 Ed.01

1.- Introduction

2.- Versions and references

Electronic expansion valves controller for refrigeration systems, compatible with most electronic expansion valves on the market. Its innovative PID algorithm allows you to optimise the evaporator overheating control and, as a result, improve the efficiency of the refrigeration system.

It is equipped with MODBUS communications for remote monitoring and parametrisation.

Compatibility

The following tables show controller AKO-145601 compatibility with electronic expansion valves and refrigerant gases.

MODEL DESCRIPTION

AKO-14560

Electronic expansion valves control kit consisting of:

-Controller AKO-145601

-Pressure probe AKO-15571

-Temperature probe AKO-15606

-Power supply transformer 115 - 230 V / 24 V AKO-80077

AKO-145601 Spare EEV electronic controller

AKO-15571 Spare pressure probe from -1 to 15 bar

AKO-15572 Optional pressure probe from -1 to 25 bar

AKO-15606 Spare Pt1000 Temperature probe (-100 to 120 ºC)

AKO-80077 Spare power supply transformer 115 - 230 V / 24 V

COMPATIBLE ELECTRONIC EXPANSION VALVES

Manufacturer DANFOSS ALCO SPORLAN CAREL

Models

ETS 12.5ETS 25BETS 50B

ETS 100BETS 250ETS 400

EX4EX5EX6EX7EX8

SEI 0.5~11SEI 1.5~20

SEI 30SEI 100SEI 175

E2V

COMPATIBLE REFRIGERANT GASES

R-22 R-134A R-404A R-407C R-410A R-717 R-23

R-507C HFO 1234ze R-744 R-407A R-407F R-507A

3

1456H002 Ed.01

1456H002 Ed.01

3.- Installation

PrecautionsUsing the unit not observing the manufacturer's instructions may alter the appliance's safety requirements. Only probes supplied by AKO should be used for the appliance to operate correctly.

The unit should be installed in a place protected from vibrations, water and corrosive gases, where the ambient temperature does not exceed the values indicated in the technical data.

For the reading to be correct, the probe should be used in a place without heat influences apart from the temperature you want to measure or control.

The probe and its cable should NEVER be installed in a conduit together with power supply, control or feeder cables.

The power supply circuit should be equipped with a switch for its disconnection of at least 2A, 230V, situated near the appliance. The cables are inserted into the rear part and should be H05VV-F or H05V-K type. The section to be used will depend on local regulations, but should not under any circumstances be less than 1 mm².

2The cables for wiring the relay contacts should have a section of between 1 mm and 2 22.5 mm and wire for the one in common should always have a section of 2.5 mm . Using

of halogen- free cables is recommended. Probes 1 and 2 should be installed as close as possible to the evaporator output. There should not be any device between them (valves, peep-holes etc.) that could alter the reading.

Maintenance

Clean the surface of the controller with a soft cloth, water and soap. Do not use abrasi-ve detergents, petrol, alcohol or solvents.

Emergency power supply input

If the controller has an emergency power supply (12 Vdc), this closes the expansion valve, and displays the CLE message in the event of a fault in the electricity supply.

Initial configuration

This equipment has been designed to regulate the electronic expansion valve via overheating control of the refrige-rant gas in the evaporator. Its configuration has been set, by default, for the most common applications. Check that the parameters match the characteristics of its installation.

Prior to start-up, it is vital to configure the following parameters:

RFT: Select the type of refrigerant gas used in the installation from among the following compatible gases:

0: R-22 1: R-134A 2: R-404A 3: R-407C 4: R-410A 5: R-717

6: R-23 7: R-507C 8: R-HFO1234ze 9: R-744 10: R-407A 11: R-407F

12: R-507A

EM: Select the expansion valve model installed from among the following compatible models:

1: Danfoss ETS 12.5 / 25B 2: Danfoss ETS 50B 3: Danfoss ETS 100B 4: Danfoss ETS 2505: Danfoss ETS 400 6: Alco EX4 7: Alco EX5 8: Alco Ex6

9: Alco EX7 10: Alco EX8 (330 step/sec) 11: Alco EX8 (500 step/sec) 12: Spolarn SEI 0.5~1113: Spolarn SEI 1.5~20 14: Spolarn SEI 30 15: Spolarn SEI 100 16: Spolarn SEI 175

17: Carel E2V

SH: Configure the overheating set point

1

2

3

45

58

70

115

4

+

RS485MODBUS

Probe 1 TemperatureAKO-15606

Max. 25 mts(AKO-15586)

PRG SET

%

ºC

bar

+5V

Sign

alA

+

B+ B-A-+

IN 24 V

Com

.

Com

ON

/O

FF

NC

No

Com

.S1

Probe 2 Suction pressure

AKO-15571

Liquid solenoid

valve

Tr+Tr-

GND

Electronic expansion valve*Mesh

AKO-145601

AKO-80077

0 0

115

24

230

DanfossETS

AlcoEX5/6

CarelAlco

SporlanSEI / SEH

A+ White White Yellow Black

A- Black Black White White

B+ Red Brown Brown Red

B- Green Blue Green Green

Wiring

* The electronic expansion valve must be the bipolar type.

Select the valve model connected via the EM parameter.

The table shows the equivalence of terminals for the most common models.

** Connection/disconnection should be made via a contact or potential free relay.

SET

AKO-D141xx

5

**

230

V

115

V

Power supply valve

Red +5VGreen signalBlack Common

Emergency power supply 12 Vdc input

1456H002 Ed.01

PRG SET

%

ºCºC

barbar

LED Overheating

LED Alert

LED Pressure

LED Expansion valve openin

LED Temperature

PRG Key

UP key

DOWN key

SET Key

LED manual mode

LED bar

LED ºC

ºC

bar

4.- Equipment description

Indicators

LED ºC: Indicates that the display shows the temperature value in ºC.

LED bar: Indicates that the display shows the pressure value in bars.

LED manual mode: Indicates that the opening amount of the valve has been configured manually (Cor parameter).

LED Alert: Indicates that there is an active alert.

LED Overheating: Indicates that the display shows the overheating value.

LED Pressure: Indicates that the display shows the suction pressure value (Probe 2).

LED Expansion valve opening: Indicates that the display shows the valve opening percentage.

LED Temperature: Indicates that the display shows the temperature value.

Messages

IMPORTANT: In the event of an alarm or fault in any of the probes, the controller closes the liquid solenoid and expansion valve until the problem is solved.

6

Message Description

PS Problem in the pressure sensor

TSD Probe 1 not connected

TsC Crossed temperature probe

MOP Maximum Operation Pressure (MOP) alarm

LOP Lower Operation Pressure (LOP) alarm

HS Maximum overheating alarm

LS Lower overheating alarm

FRA Frost detection alarm

STP Regulation stopped by external thermostat (ON/OFF Input)

CAL Expansion valve initialisation

CLE Valve closing underway due to fault in the electricity supply (emergency power supply required)

1456H002 Ed.01

1456H002 Ed.01

5.- Operation

Keypad

PRG key: Pressing it for 5 seconds accesses the parameters programming menu.

Pressing it twice allows the regulation to be restarted in the event of an alarm (see page 9).

In the programming menu, you may return to level 1.

UP N key: In the programming menu, you may scroll around the different levels, or during the setting of a parameter, change its value.

DOWN Q key: In the programming menu, you may scroll around the different levels, or during the setting of a parameter, change its value.

SET key: Allows the displayed value to be changed (overheating, suction pressure, expansion valve opening or temperature) (only if the DM parameter = 0).

The programming menu allows you to move around the different levels and accept changes. Pressing it for 5 seconds exits the programming menu.

Display

The value displayed is set via the DM parameter. By default, it displays the overheating value.

Adjustment of parameters

Using the programming menu, you will be able to configure the various parameters in order to adapt the controller's operation to the needs of its installation.

In order to access the programming menu, press the PRG key for 5 seconds, or until the message ''PwD'' appears on the display. Using the N and Q keys enter the password (programmed into the PSS parameter) and press SET. Once entered correctly, the password will not be requested again for 30 minutes.

ºC

bar

ºC

bar

ºC

bar

ºC

bar

ºC

bar

ºC

bar

ºC

bar

ºC

bar

ºC

bar

ºC

bar

PRG

5 sec.

PRG

SET

SET

SET

SET

Change value

Change menu

Change value

Level 1: Menus

Level 2: Parameters

Acceptchanges

Acceptchanges

Change parameter

Enter password

Passwordrequest

Level 3:Values

5 sec.

Press the Set button for 5 seconds to exit programming. If no key is pressed for 3 minutes, the controller will exit programming.

7

1456H002 Ed.01

Regulation

The controller regulates the opening of the expansion valve according to the temperature and pressure readings obtained by probes 1 and 2, and according to the demand for controlled cooling by an external element (ON / OFF input).

If there is demand for cooling (ON / OFF input active) the controller opens the liquid solenoid and regulates the opening of the expansion valve in order to obtain the overheating shown on the SH parameter.

When the cooling demand is completed, the controller closes the liquid solenoid and expansion valve, displaying the STP message on screen.

The OR and ORT parameters define the behaviour of the expansion valve during start up.

OR: Defines the opening degree of the valve at the moment when the controller is started up. We recommend that this value is as close as possible to the opening work value, in order to ensure smooth control. If continuous stop and starts are detected for the compressor, or if there is a return of liquid, lower the initial opening value. If excessively low pressures are detected during start up, increase the initial opening value.

ORT: Defines the duration in seconds of the initial valve opening (defined in OR). Once this time has elapsed, the controller will begin to regulate the valve automatically.

The regulation parameters (PRO, int, der), determine how opening of the expansion valve is modified in light of the temperature and pressure variations detected.

PRO: The proportional gain determines how the valve opening varies for each level of overheating variation. If set to 3%, the valve opening varies 3% per 1.0K of overheating.

If the opening is to unstable, lower the gain value. If the opening to too stable, increase the gain value.

INT: Determines the controller response speed according to the degree of deviation between the current overheating value and the set point (SH). The lower the value, the greater the response speed and, therefore, the greater the oscillations are before getting to the set point.

DER: Determines the controller response speed to sudden changes in pressure/temperature. The higher the value, the faster the corrective action will be, but oscillations will also increase before reaching the set point.

8

LIQUID CONTAINER

COMPRESSOR

EXPANSION VALVE

LIQUID SOLENOID

EVAPORATOR

S1

S2CONDENSER

PRG SET

%

ºC

barAKO-145601

SET

AKO-D141xx

1456H002 Ed.01

Alarms

The alarms alert the user and stop regulation (closing the expansion valve) if determined values of pressure, overheating or temperature are reached. These values are defined using the following parameters:

LSM: Lower overheating alarm HSM: Maximum overheating alarm

LPM: Lower pressure alarm in probe 2 MPM: Maximum pressure alarm in probe 2

FPM: Ice alarm in evaporator

For every alarm 4 options must be configured:

Activation type

ŸDisabled: The alarm is not activated.

ŸAutomatic reset: The regulation restarts when the deactivation value of the alarm is reached.

ŸManual reset: In order for the regulation to restart, it is necessary to press the PRG button twice.

Turn-on value

If this value is reached, the regulation stops and the equipment displays a message on screen.

Turn-on delay time

Defines the delay time between when the turn-on value is reached and the alarm activates.

Deactivation value

Defines the value at which the alarm is no longer displayed and the machine returns to standard regulation (if automatic reset has been set up).

Pressure Probe (S2)

The measuring range of the pressure probe set in the factory, on the probe model provided (AKO 15571), should only be changed if a different probe is installed. It should only be configured by qualified staff.

PSH: Maximum range of pressure probe.

PSL: Lower range of pressure probe.

The PSO parameter allows you to vary the value read by the pressure probe (offset). It is used to compensate for reading errors when the probe can not be positioned in the correct place.

Temperature probe (S1)

The TSO parameter allows you to vary the value read by the temperature probe (offset). It is used to compensate for reading errors when the probe can not be positioned in the correct place.

If probe readings have continuous fluctuations, a reading delay may be set as a filter in order to stabilise the reading. This delay is configured using the FT parameter and affects probes S1 and S2.

Expansion valve

You can customise the behaviour of the expansion valve using the following parameters:

JCR: Using this parameter, you may limit the opening speed of the expansion valve

URH / URL: They allow the maximum and lower opening degrees of the expansion valve to be limited.

COR: This parameter allows a certain opening degree of the expansion valve to be set. While this option is active, the opening will remain fixed (unregulated) and the LED will remain manually lit up (page 6).

% o

peni

ng

0

100

t

JCR: OFF JCR: 10.0%

10 sec.

9

1456H002 Ed.01

Level 1

Level 2

GROUP 1

Description Value Min. Def. Max.

1.PrSH Overheating set point (K) 0.5 10 30

or Initial opening for valve start up (%) 0 50 100

ort Duration of initial start up opening (Sec.) 0 5 300

pro Proportional gain 0.1 3 99.9

int Integral time (Sec.) 0 120 999

der Derivative time (Sec.) 0 30 999

lsMLower overheating alarm0: Deactivated 1: Automatic reset 2: Manual reset

0 1 2

lSS Lower overheating alarm activation value (K) 0.5 3 30

LSt Lower overheating alarm turn-on delay time (Sec.) 1 15 300

lsC Lower overheating alarm deactivation time (K) 1 5 30.5

MpMMaximum pressure alarm in probe 20: Deactivated 1: Automatic reset 2: Manual reset

0 1 2

Mps Maximum pressure alarm activation value (bar/psi) 0.1 9 99.9

Mpt Maximum pressure alarm turn-on delay time (Min.) 1 1 15

MpC Maximum pressure alarm deactivation time (bar/psi) 0.1 8 99.9

HSMMaximum overheating alarm0: Deactivated 1: Automatic reset 2: Manual reset

0 0 2

HSS Maximum overheating alarm activation value (K) 10.0 30 40.0

HST Maximum overheating alarm turn-on delay time (Min.) 1 3 600

HSC Maximum overheating alarm deactivation time (K) 7.0 27 37.0

FPMFreeze alarm0: Deactivated 1: Automatic reset 2: Manual reset

0 0 2

FPS Maximum freeze alarm activation value (ºC/ºF) -100 0 392

FPT Freeze alarm turn-on delay time (Sec.) 5 30 200

FPC Maximum freeze alarm deactivation time (ºC/ºF) -97 3 392

LPMLower pressure alarm in probe 20: Deactivated 1: Automatic reset 2: Manual reset

0 1 2

LPS Lower pressure alarm activation value (bar/psi) -1 0 25

LPT Lower pressure alarm turn-on delay time (Sec.) 5 5 200

LPC Lower pressure alarm deactivation time (bar/psi) 0.7 0.3 25.3

10

Initial parameters

Using the INI parameter, all of the parameters can be reset to their default values. For this to take effect, select the parameter and enter the password using the N and Q keys. Press SET to reset the controller to its factory parameters.

The equipment's operation functions are divided into 3 different groups.

The Def. column indicates the default parameters set in the factory. Temperature values are expressed in ºC. (Equivalent temperature in ºF) and the pressure values in bar (equivalent pressure in psi).

6.- Table of parameters

1456H002 Ed.01

Leve

l 1

Leve

l 2

GROUP 2

Description Value Min. Def. Max.

2.Prpu Pressure units 0: Bar 1: Psi 0 0 1

Tu Temperature units 0: ºC 1: ºF 0 0 1

EM

Selection of expansion valve model connected1: Danfoss ETS 12.5 / 25B 2: Danfoss ETS 50B 3: Danfoss ETS 100B

4: Danfoss ETS 250 5: Danfoss ETS 400 6: Alco EX47: Alco EX5 8: Alco EX6 9: Alco EX7

10: Alco EX8 (330 step/sec) 11: Alco EX8 (500 step/sec) 12: Spolarn SEI 0.5~1113: Spolarn SEI 1.5~20 14: Spolarn SEI 30 15: Spolarn SEI 100

16: Spolarn SEI 175 17: Carel E2V

1 1 17

TST Total steps for expansion valve* 0 260 999

DSP Expansion valve speed* 0 250 999

GROUP 3

Description Value Min. Def. Max.

3.Prpss Parameter access password 0 5 999

rft

Type of refrigerant gas used: 0: R-221: R-134A 2: R-404A 3: R-407C 4: R-410A 5: R-717 6: R-237: R-507C 8: R-HFO1234ze 9: R-744 10: R-407A 11: R-407F 12: R-507A

0 1 12

PSH Pressure probe range (Maximum) (bar/psi) -1 15 99

PSL Pressure probe range (Lower) (bar/psi) -1 -1 99

PSO Pressure probe calibration (S2) (bar/psi) -9.9 0 9.9

TSO Pressure probe calibration (S1) (ºC) -19.9 0 19.9

JCR Expansion valve opening speed limit (%) 0.1 OFF 9.9

UrH Maximum expansion valve opening limit (%) 0 100 100

UrL Lower expansion valve opening limit (%) 0 0 100

Ft Reading delay for probes (S1 and S2) (Sec.) 0.1 1 10.0

COR Lower expansion valve forced opening value (%) 0.0 OFF 100

DM

Display mode: 0: Displays options 1 to 4 sequentially 1: Overheating value (ºK)

2: Suction pressure value (Probe 2) 3: Valve opening (%)4: Temperature value (Probe 1) 5: Overheating set point

0 1 14

CID Communication direction 1 1 254

CSP Communication speed (BPSx100) 48 96 384

INI Initial settings (enter password and press SET) 0 0 999

* The TST and DSP parameters are adjusted automatically when the expansion valve model is selected. They

should only be changed by qualified staff. AKO is not responsible for any damage that may be inflicted on the

installation.

11

1456H002 Ed.01

7.- Technical specifications

Controller AKO-14601

Power supply ........................................................................................................24 V~ +10% / -15%, 50/60 HzConsumption including expansion valve ............................................................................................................

Pressure probe AKO-15571 / AKO-15572

Power supply .......................................................................................................................................5 Vcc ±5%Output.........................................................................................................................DC 0.5 to 4.5 V, ratiometricProtection degree...........................................................................................................................................IP65Measuring range AKO-15571 .........................................................................................................-1 to 15 bar

AKO-15572 .........................................................................................................-1 to 25 barPrecision ..................................................................................................................................................±0.25%Maximum pressure supported......................................................................1.5 times the maximum reading rangeMaximum peak pressure ................................................................................3 times the maximum reading rangeWorking ambient temperature............................................................................................................-40 to 80 ºCWiring Black .....................................................................................................................................Common

Red...............................................................................................................................................+5VGreen.........................................................................................................................................Signal

Length of cable ...............................................................................................................................................2 m

Temperature probe AKO-15606

Type of sensor............................................................................................................................................Pt1000Protection degree...........................................................................................................................................IP67Measuring range............................................................................................................................-100 to 120 ºCPrecision ....................................................................................................................................± 0.3 ºC to 25 ºC

2Length of cable ...............................................................................................................................2 m (0.5 mm )Response time.........................................................................................................................................1 second

Transformador AKO-80077

Input .................................................................................................................................115/230 V~ 50 / 60 HzOutput .......................................................................................................................................24 V~ 50 / 60 HzAssembly...................................................................................................................................................

1AOutput for expansion valve..............................................................................Valves with a bipolar stepper motorCompatibility with expansion valves....................................................................................................(see page 3)Maximum consumption of expansion valve................................................................................................700 mAOpening control precision................................................................................................1/1000 (0.0 to 100.0 %)Working ambient temperature .................................................................................-10 to 50 ºC, moisture >90 %Storage ambient temperature ..................................................................................-20 to 60 ºC, moisture >90 %Relay solenoid valve ...............................................................................................................SPST 2 (2) A 250 V~Compatibility with refrigerant gases....................................................................................................(see page 3)Communications ......................................................................................................MODBUS RTU / ASCII (Rs485)

2Terminals ........................................................................................................................Screw-on, up to 2.5 mmDimensions ......................................................................................................................................(Vsee page 4)Assembly...................................................................................................................................................DIN rail

DIN rail

12

1456H002 Ed.01

13

1456H002 Ed.01

14

1456H002 Ed.01

15

351456002 R

EV.0

0 2

015

We reserve the right to supply materials that might vary slightly to those described in our Technical Sheets. Updated information is available on our website.

AKO ELECTROMECÁNICA , S.A.L.

Avda. Roquetes, 30-3808812 Sant Pere de Ribes.Barcelona Spain.

Tel.: +34 902 333 145Fax: +34 938 934 054www.ako.com

••